GMS97C1051-24D 查看數據表（PDF） - Hynix Semiconductor

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GMS97C1051-24D

8-Bit CMOS Microcontorller

Hynix Semiconductor 

8-Bit CMOS Microcontorller

Lock Bit Protection Modes

Program Lock Bits

LB1 LB2

Protection Type

1U

2P

3P

U

No program lock features.

Further programming of the

U

EPROM is disabled.

Same as mode 2, also verify

P

is disabled.

GMS97C1051/L1051

Reading the Signature Bytes :

The signature bytes are read by the same procedure as

a normal verification of locations 000H and 001H,

except that P3.5 and P3.7 need to be pulled to a logic

low.

Manufacturer ID:

(00H) = E0H ( Indicates manufactured by HEI )

Device ID:

(01H) = 16H ( Indicates GMS97C1051/L1051 )

U : unprogrammed, P : programmed

EPROM Programming Modes

Table 8. EPROM Programming Modes

Mode

Read Signature

RST

1

P3.2/ PROG

1

P3.3

0

P3.4

0

P3.5

0

P3.7

0

Program Code Data

Vpp

0

1

1

1

Verify Code Data

1

1

0

0

1

1

Pgm encryption table

Vpp

0

1

0

1

Pgm encryption bit1

Vpp

1

1

1

1

Pgm encryption bit

Vpp

1

1

0

0

Notes: 1. '0' = Valid low, '1' = Valid high for that pin.

2. Vpp = 12.75 V ¡ ¾0.25 V

3. Vcc = 5 V ¡ ¾10 % during programming

and verification.

4. P3.2/ PROG receives 10 programming

pulses while Vpp is held at 12.75V. Each program-

ming pulse is low for 100uS (¡ ¾10uS)

and high for a minimum of 10uS.

31

Hynix semiconductor

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